Pump-operating mechanism



(No Model.)

O. HENJ UM. PUMP OPERATING MECHANISM,

Patented Jan. 22,1889.

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jy I (Ii-2 N. PETERS. PhckrUMnphnr. waahin im u c AT T FFI 1 OLE HENJUM, OF MINNEAPOLIS, MINNESOTA.

PUMP-OPERATING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 396,485, dated January 22, 1889.

Application filed July 9, 1888. Serial No. 279,368. (No model.)

To all whom it many concern;

Be it known that I, OLE I-IENJUM, of Minneapolis, county of Hennepin, and State of Minnesota, have invented certain new and useful Improvements in Pump-Operating Mechanism, of which the following is a specification.

My invention relates to improvements in operating mechanism for single-acting plunger-pumps; and it consists, generally, in the construction and arrangement hereinafter described, and particularly pointed out in the claim.

In the drawings which form a part of this specification, Figure 1 is a side elevation of my improved pump. Fig. 2 is a longitudinal vertical section. Figs. 3 and l are details.

In the drawings, 2 represents the barrel of the pump; 3, a plunger; :4, a piston-rod, and 5 a cap.

The cap 5 is preferably arranged to fit over the end of the barrel 2, and is provided with standards 7, which may be cast in one piece with the said cap, or secured thereto in any other suitable manner. A shaft, 9, is arranged in bearings in the upper extremities of the standards 7. This-shaft is provided with an arm, 10, which is preferably secured to the shaft by means of a hub, 11, and a set-screw, 12. By operating the set-screw the hub is clamped upon the shaft with the arm in any desired position, in order to give the plunger more or less throw, as will hereinafter be described.

13 represents a fly-wheel, which is secured to one of the standards 7 by means of a suitable shoulder-bolt, 15, forming an axis for the said fiy-wheel. A crank or handle, 16, may be provided for operating the wheel. A projecting lug, 17, may be placed upon each of the spokes of the wheel. These are prefer ably three in number, although I do not confine myself to this number, as the device will work equally well with one or more. The extremity of this projecting lug 17 is preferably provided with a friction-roller, 19.

An arm, 20, secured to the shaft 9, extends upward in the plane of the roller 19, and as the fiy-wheel 13 is revolved the said roller 19 will strike the arm 20 and travel along on its surface until it reaches the end or passes the extremity of the said arm. This operation causes a partial rotation of the shaft 9 and raises the arm 10, which is secured thereto. The extremity of the piston-rod at is secured to the arm 10 by a link, 22. This link maybe adjustable upon the arm 10 in order to give greater or less power to the plunger. I have shown in the drawings series of pin-holes in the arm 10, by which the link may be adj usted; but any other suitable arrangement may be used. A volute or coil spring, 23, is preferably placed within the cap 5, with the upper end resting against the under surface of the cap. The lower end of this spring bears upon the collar 25, adjustably secured to the piston-rod 4.. The collar 25 may be raised or lowered along the said piston-rod to increase or diminish the amount of tension or force of the said spring.

A plate, 27 is preferably located at the point where the joint is made between the upper and lower section of the pump or between the pump-barrel 2 and the cap 5. This plate is so located as to cover the opening between the barrel and the cap below the spring 23 and protect the said spring from water as the pump is operated.

A suction-pipe may be connected to the lower portion or the extremity of the barrel in the ordinary manner, and an ordinary check-valve may be located in this pipe preferably below the freezing-point, and this pipe is also preferably provided with a waste or vent hole to allow the water held in the pipe above the valve to gradually flow out, as is commonly done where pumps are placed in exposed localities.

The operation of myimproved pump-operating mechanism is as follows: The fly-wheel 13 is revolved by means of the crank 16, and the projecting friction-101119 is brought in contact with the arm on the shaft 9, and the said arm 20 is carried from the position shown in Fig. 4- to the position shown in Fig.

5. The plunger, which is connected to the said shaft 9 through the arm 10, will be raised against the tension of the spring 23. \Vhen the roller 19 has passed the end of the arm 20, the spring 23 will act upon the collar 25 and force the plunger downward. The roll 19 upon the neXt spoke of the wheel will then be brought in contact with the arm 20, and the plunger will again be raised. Should alonger stroke of the plunger be required, the said set-screw 12 may be loosened and the arm 10 raised or thrown upward around the shaft. This will cause the arm 20 to be drawn forward and be brought into engagement soon er and hold the engagement for a greater portion of the revolution of the wheel, and a longer stroke will be made. If an increase of tension is necessary in order to properly force the plunger through the water, the collar 25 may be adjusted on the rod 4: to give any re quired tension necessary.

\Vhat I claim is The combination, with the pump-barrel having the standards 7, of the fiy-wheel l3, pivoted to one of said standards 7 and having the projections 17 the shaft 9, adapted to tnrnin proper bearings in the standard 7 and having the arin 20, adapted to be engaged by the projections 17 in the revolution of the fly-wheel, the arm 10, adj ustably secured to the shaft 9, so as to regulate the length of throw of the pump-plunger, the plunger l, having suitable 

